Mare wemple



(No Model.)

M, WEMPLB. THILL GOUPLING.

No. 526,473. Patented sept. 25, '1894.

Zn #6717074: Ma r/V m 1v1@ UNITED STATESx MARI; WEMPLE, or CHICAGO, ILLINOIS, AssIGNoR, BY DIRECT ANDy MEsNE PATENT OFFICE.

ASSIGNMENTS, OF ONE-HALF TO F. H. VROOMAN.

SPECIFICATION forming part of LettersPatent No. 526,473, dated September 25, 1894. Application iiled March S1, 1894. Serial No. 505,891. (No model.)

To LZZ whom it may concern,.-

Be it known that I, MARK WEMPLE, a citizen of the United States, residing at Chicago, county of Cook and State of Illinois, have invented a certain new and useful Improvement in Thill-Couplings, of which the4 following is a speciiication. v i

My invention relates to improvements in thill couplings, in which the shaft iron is provided with a locking bolt, passing through lateral annular tumblers, the ends of the locking bolt being iiattened and placed within vertical slots in the side wing of the forward projecting clip irons and the object of my improvement is to provide an anti-rattling self- .locking shaft or pole coupling.` I attain this object by the mechanism illustrated in the accompanying drawings, in which-e j Figure l, is a perspective view of a pair of thills showing the thill iron thereon. Fig. 2, is a side view of the thill and coupling; Fig. 3, a transverse vertical section through line X; Fig. 4, a side view of one of the thill iron wings with the external plate y removed; Fig. 5, a side view of the plates outwardly from the thill iron to receive the ends of the locking bolt Fig. `6, a side view of the external plates; Fig. 7, a transverse vertical section of the locking bolt showing the dove tailed key and seat, and Fig. 8, a perspective View of the locking bolt and key.'

Similar letters refer to similar several views.

Fig. 1, shows a pair of thills A provided rearwardly with the thill iron B showing the key parts in the seat C therein, which consists of a transverse slot formed in the inner surface. j

Fig. 7, shows a transverse view of the locking bolt D provided therein with a dove tailed slot E to receive the key F therein.

Fig. 8, shows this locking bolt and key F. The ends of this locking bolt are iiattened or formed with tenons G. This locking bolt D is placed within the thill iron B so that the key F will engage with the slot C within the said thill iron. j

The axle clip H and a section of the axle I are shown in Fig. 2. This clip has forwardly the projecting and oppositely disposed wings J designed to receive therein the thill iron B. The upper part of these wings have vertical recesses K'. therein to receive theparts of the locking bolt D projecting beyond the side of the thill iron while the lower parts are formed as a bearing L for the said locking bolt.

The outer face of each of these wings J is provided with an annular iiange M to receive therein the rotating plate or `Washer N as shown in Fig. 5. Theserotating plates or washers N have a vertical slot O therein to receive the iiattened or tenoned end G of the locking bolt. In order that these plates N may be retained within the annular recess at the side of the wings J, I provide an annular groove `P around the outer ed ge of each of these washers N and outwardly therefrom, I provide a retaining plate Q as shown in Fig. 6. This retaining plate has a central opening R and a lvertical recess or opening S at the top connecting with this said central opening R. These outwardly retaining plates Q are secured in position by means of screws or rivets through the wings U.

In joining the dierent parts of my device I first place the key F within the locking bolt and then introduce the said bolt and key F within the thill iron. The outer end of the thills are then raised so that the ends G of the locking bolt D will be in a vertical position when the ends of the locking bolt may be passed downwardly through the slots O and S and the slots Kin the wings J. The circular ends of the locking bolt D pass downwardly and rest upon the bearings L, while the thill iron B rests upon the locking bolt and between the wings J. The outer ends of the thills are then lowered to their normal position and in so doing the keyK in the locking bolt D causes the plates or washers N at the` sides of the wings J to move sufficiently so that the slot O therein is at such an angle with the tenons at the ends of the locking bolt D that they are retained'in position and thus prevented from moving upwardly and out of theslots O and S.

As will readily be noticed this form of locking bolt and lateral plates give an unusually large bearing surface for the thill irons and consequently the frictional or bearing surface is so minimized that when once properly adj usted it will form an anti-rattling device and entirely, does away with the usual bolt and IOO Y from the vehicle.

nuts and does not :necessitate the `use/of a wrench when it is desired to detach the thill All that is necessary to remove the thills is to raise them up toasufcient angle so as to bring the tenons G Vertically and in doing so the bearing plates N at the-sides of the `wings are rotated so that'- the slots O are 'brought up and 'in conjunction oppositely with. the slots S of the outer retaining plates Q when the thill irons and locking bolts may be raised vertically out from between the wings J.

In the same manner when it is desired to attach the'thills it is only necessary to raise the outer ends of the thills at asucien'tjangle when the ends of the locking bolts may read` low cylinders formed with aslot .adapted to receive the llat stationary bolt and a slotted revolving barrel to receive the hollow cylinder have been employed; but my device differs essentially from these inasmuch as I construct my thill-coupling with a pair of thin dat disks Vdisposed within the side walls of the coupling, and with which the dovetailed ends of the bolt through the thill-iron engage.

What I claim as my invention, and desire Y to secure by Letters Patent, is-

1. The combination of a pair of rotating `disks disposed within side "wings with the locking bolt and thill-iron substantially as herein set forth.

2. The combination of At-hexthill-.iron formed .with the slottedeye, with thefeathered bolt 

